LIST command in BASIC doesn't print line numbers correctly

[Frigolit]

When invoking the LIST command in BASIC, the line numbers are not printed as expected. See attached image.

[Frigolit]

Turns out the issue is with displaying and/or handling numbers in some cases, e.g. PRINT 5 spits out "-0" and PRINT 100/2 spits out "-:0g051".